A genuine casting of Arnie's head from Batman & Robin is just one of the bizarre movie props available on eBay right now. You can also own the robot head of Robin Williams from Bicentennial Man, and the original helmet from the Rocketeer movie. Or if your loved ones are really obsessive, you can get them some even weirder crap.

If you're not satisfied with Robin Williams' head, you can also get his eyes and arm (also from Bicentennial Man) as well as some sort of weird animatronic prop. Also on eBay: